Full TGIF Record # 5450
Item 1 of 1
Publication Type:
Content Type:Abstract or Summary only
Author(s):Rosemond, J. M.; Witt, W. W.; Powell, A. J.
Author Affiliation:Rosemond: Graduate Research Assistant; Witt: Associate Professor; Powell: Professor, Department of Agronomy, University of Kentucky, Lexington, KY
Title:Nimblewill control in bluegrass turf and pastures
Section:Forage and range weed control
Other records with the "Forage and range weed control" Section
Source:Proceedings of the North Central Weed Control Conference. Vol. 36, 1981, p. 42.
# of Pages:1
Publishing Information:Omaha, NB
Keywords:TIC Keywords: Herbicide evaluation; Herbicide rates; Herbicide resistance; Herbicide timing; Linuron; Muhlenbergia schreberi; Poa pratensis; Weed control
Abstract/Contents:"Experiments to selectively control nimblewill in Kentucky bluegrass turf were initiated in August, 1980. Linuron was used at 4 rates at 4 different dates from August through October, 1980. Single applications of linuron in August between 1.12 kg/ha and 4.48 kg/ha provided excellent control of nimblewill with only moderate injury to bluegrass. Bluegrass was able to tolerate linuron up to 2.24 kg/ha with rapid recovery; however, at high rates, recovery was much slower. A single application of 1.12 kg/ha had 22% regrowth of nimblewill the following spring. Applications of 2.24, 3.36, and 4.48 kg/ha had no regrowth of nimblewill in the spring. Split applications of linuron at 1.12 kg/ha applied 2 wk apart resulted in complete control of nimblewill with the least damage to bluegrass. Split applications of 2.24 kg/ha provided unacceptable injury to bluegrass. Percent stand of bluegrass increased from 34 to 85% the following year for a single August application of 2.24 kg/ha and from 34 to 98% for a split August application of 1.12 kg/ha. Single applications of 2.24 and 4.48 kg/ha in October provided less initial injury to nimblewill and bluegrass. Split applications in September and October of 2.24 and 4.48 kg/ha resulted in 97% control of nimblewill, but also increased injury to bluegrass. Studies were also conducted to evaluate nimblewill control in Kentucky bluegrass pastures. A number of single and split applications of linuron were applied to infested pastures from June through October, 1981. Results indicated that bluegrass could tolerate higher rates of linuron when applied to a pasture situation compared to a more highly managed turf. Split applications of 1.12 kg/ha 2 wk apart resulted in 95% nimblewill control with the least injury to the bluegrass. Split applications of 2.24 kg/ha resulted in 100% control of nimblewill, but initial bluegrass injury was higher. Results showed that August was the optimum time of year for linuron application for nimblewill control in pastures."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rosemond, J. M., W. W. Witt, and A. J. Powell. 1981. Nimblewill control in bluegrass turf and pastures. Proc. North Cent. Weed Sci. Soc. 36:p. 42.
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